KT8554B

KT8554B/7B 1 CHIP CODECS INTRODUCTION The KT8554B/7B are single-chip PCM encoders and decoders (PCM CODECs) and PCM line filters. These devices provide all the functions required to interface a full-duplex voice telephone circuit with a time-division-multiplex (TDM) system. These devices are designed to perform the transmit encoding and receive decoding as well as the transmit and receive filtering functions in PCM system. They are intended to be used at the analog termination of a PCM line or trunk. These devices provide the bandpass filtering of the analog signals prior to encoding and after decoding. These combination devices perform the encoding and decoding of voice and call progress tones as well as the signalling and supervision information. 16-CERDIP 16-DIP300A FEATURES Complete CODEC and filtering system Meets or exceeds AT&T D3/D4 and CCITT specifications µ-Law : KT8554B, A-Law : KT8557B On-chip auto zero, sample and hold, and precision voltage references Low power dissipation : 60mW (operating) 3mW (standby) ± 5V operation TTL or CMOS compatible Automatic power down 16-SOP-BD300 -SG ORDERING INFORMATION Device KT8554BJ KT8557BJ KT8557BN KT8554BN Package 16-CERDIP 16-DIP-300A 16-SOP-BD300 -SG Operating Temperature - 25 ~ 125°C - 25 ~ 70°C - 25 ~ 70°C PIN CONFIGURATION KT8554BD KT8557BD V BB GNDA 1 16 VF X I + VF X I GS X TS X FS X S DX BCLK 2 15 VF RO V CC FS R DR BCLK R/CLKSEL 3 14 4 KT8554B/7B 13 5 12 6 11 7 10 X MCLK R/PD...